The nurse receives a client from the post-anesthesia unit with a new onset of sinus tachycardia and a heart rate of 118 beats per minute. To which reasons does the nurse relate the increased heart rate? (Select All that Apply.)
Anxiety
Sleep
Fever
Hyperglycemia
Blood loss
Correct Answer : A,C,E
A. Anxiety:
Anxiety can lead to an increased heart rate due to the activation of the sympathetic nervous system. When a person is anxious, their body releases stress hormones like adrenaline, which can stimulate the heart to beat faster. This increased sympathetic activity can cause sinus tachycardia, where the heart rate is faster than normal.
B. Sleep:
While sleep can affect heart rate variability, causing fluctuations in heart rate during different stages of sleep, it typically does not cause a significant and sustained increase in heart rate like sinus tachycardia. Sleep is more likely to influence heart rate patterns rather than directly cause sinus tachycardia.
C. Fever:
Fever, especially in response to infection or inflammation, can lead to an elevated heart rate. The body's response to fever includes increased metabolic activity, which can raise the heart rate as part of the physiological stress response. Fever-induced sinus tachycardia is a common finding in individuals with infections.
D. Hyperglycemia:
While hyperglycemia (high blood sugar levels) can have cardiovascular effects over time, such as contributing to atherosclerosis and heart disease, it is not typically a direct cause of sinus tachycardia. Sinus tachycardia is more commonly associated with acute stressors like anxiety, fever, or hypovolemia (such as from blood loss).
E. Blood loss:
Significant blood loss, such as during surgery or due to trauma, can result in hypovolemia, where there is a decrease in blood volume circulating in the body. In response to hypovolemia, compensatory mechanisms kick in, including an increase in heart rate (sinus tachycardia), to maintain blood pressure and perfusion to vital organs.
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Related Questions
Correct Answer is B
Explanation
A. The blood was infused too quickly and overwhelmed the client's circulatory system:
While infusing blood too quickly can lead to circulatory overload and related complications like heart failure or pulmonary edema, it is not the cause of an acute hemolytic transfusion reaction. Acute hemolytic reactions occur due to immune responses against incompatible donor blood.
B. The donor blood was incompatible with that of the client:
This is the correct answer. An acute hemolytic transfusion reaction happens when there is an incompatibility between the donor's blood and the recipient's blood. This can occur due to mismatched ABO blood types or Rh factor, leading to the recipient's immune system attacking and destroying the transfused red blood cells.
C. The client had a sensitivity reaction to a plasma protein in the blood:
Sensitivity reactions to plasma proteins can occur, but they typically result in different types of transfusion reactions, such as allergic reactions or febrile non-hemolytic reactions. These reactions are caused by antibodies to specific plasma proteins and are not the cause of acute hemolytic transfusion reactions.
D. Antibodies to donor leukocytes remained in the blood:
This option refers to febrile non-hemolytic transfusion reactions, which occur due to antibodies against donor leukocytes. However, this type of reaction is distinct from acute hemolytic reactions, which are primarily caused by ABO or Rh incompatibility.
Correct Answer is ["A","C","D","F"]
Explanation
A. History of smoking:
Smoking is a well-established risk factor for coronary artery disease (CAD). Cigarette smoke contains harmful chemicals that damage blood vessels, promote the formation of atherosclerotic plaques, and increase the risk of blood clots, all of which can lead to CAD, heart attacks, and strokes.
B. Body mass index (BMI) of 20:
While obesity and elevated BMI are risk factors for CAD, a BMI of 20 falls within the healthy weight range for most adults. However, it's important to note that BMI alone may not fully capture an individual's overall cardiovascular risk, as factors like body composition, waist circumference, diet, and physical activity level also contribute to heart health.
C. History of diabetes:
Diabetes, especially type 2 diabetes, is a significant risk factor for CAD. Elevated blood sugar levels over time can damage blood vessels (atherosclerosis), increase inflammation, and contribute to other metabolic abnormalities that raise the risk of heart disease, including heart attacks and peripheral vascular disease.
D. Family history of coronary heart disease:
Having a family history of coronary heart disease (CHD) or premature heart attacks (before age 55 in men or before age 65 in women) increases the risk of developing CAD. Genetic factors play a role in the development of heart disease, and individuals with close relatives affected by CHD have a higher likelihood of developing similar conditions.
E. Female gender:
While gender can influence cardiovascular risk factors and presentation, being female alone is not considered a specific risk factor for CAD. However, women may have different risk profiles or risk factors compared to men, such as hormonal influences (e.g., menopause) and unique symptom presentation for heart disease.
F. Age greater than 45 years for men:
Advancing age is a significant risk factor for CAD, especially for men. Men aged 45 years and older are at increased risk compared to younger age groups due to factors such as the cumulative effects of risk factors over time, hormonal changes, and age-related changes in blood vessels and heart function.
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